Timing
type: StructureDefinition
node role: treeRoot
id:
  v: Timing
text:
  status:
    v: generated
  div:
    v: Name Flags Card. Type Description & Constraints<img src="[binary]" alt="doco" style="background-color: inherit"/> <img src="[binary]" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="datatypes-definitions.html#Timing" title="Timing : Specifies an event that may occur multiple times. Timing schedules are used to record when things are planned, expected or requested to occur. The most common usage is in dosage instructions for medications. They are also used when planning care of various kinds, and may be used for reporting the schedule to which past regular activities were carried out.">Timing ΣN Element A timing schedule that specifies an event that may occur multiple times Elements defined in Ancestors: id, <a href="types.html#Element" title="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.">extension, <a href="types.html#BackboneType" title="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.#xA;#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource …
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status
    l: structuredefinition-standards-status
  value: Code
    v: normative
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-wg
    l: structuredefinition-wg
  value: Code
    v: fhir
url:
  v: http://hl7.org/fhir/StructureDefinition/Timing
  l: Timing
version:
  v: 6.0.0-ballot4
name:
  v: Timing
status:
  v: active
experimental:
  v: false
date:
  v: 2026-06-22T14:26:38+00:00
publisher:
  v: HL7 International / FHIR Infrastructure
contact:
  telecom:
    system:
      v: url
    value:
      v: http://hl7.org/fhir
contact:
  telecom:
    system:
      v: url
    value:
      v: http://www.hl7.org/Special/committees/fiwg
description:
  v: Timing Type: Specifies an event that may occur multiple times. Timing schedules are used to record when things are planned, expected or requested to occur. The most common usage is in dosage instructions for medications. They are also used when planning care of various kinds, and may be used for reporting the schedule to which past regular activities were carried out.
jurisdiction:
  coding:
    system:
      v: http://unstats.un.org/unsd/methods/m49/m49.htm
      l: m49.htm
    code:
      v: 001
    display:
      v: World
purpose:
  v: Need to able to track proposed timing schedules. There are several different ways to do this: one or more specified times, a simple rules like three times a day, or before/after meals.
fhir version:
  v: 6.0.0-ballot4
mapping:
  identity:
    v: v2
  uri:
    v: http://hl7.org/v2
    l: v2
  name:
    v: HL7 V2 Mapping
mapping:
  identity:
    v: rim
  uri:
    v: http://hl7.org/v3
    l: v3
  name:
    v: RIM Mapping
kind:
  v: complex-type
abstract:
  v: false
type:
  v: Timing
  l: Timing
base definition:
  v: http://hl7.org/fhir/StructureDefinition/BackboneType
  l: BackboneType
derivation:
  v: specialization
snapshot:
  element:
    id:
      v: Timing
    path:
      v: Timing
    short:
      v: A timing schedule that specifies an event that may occur multiple times
    definition:
      v: Specifies an event that may occur multiple times. Timing schedules are used to record when things are planned, expected or requested to occur. The most common usage is in dosage instructions for medications. They are also used when planning care of various kinds, and may be used for reporting the schedule to which past regular activities were carried out.
    comment:
      v: Describes the occurrence of an event that may occur multiple times. Timing schedules are used for specifying when events are expected or requested to occur, and may also be used to represent the summary of a past or ongoing event. For simplicity, the definitions of Timing components are expressed as 'future' events, but such components can also be used to describe historic or ongoing events. A Timing schedule can be a list of events and/or criteria for when the event happens, which can be expressed in a structured form and/or as a code. When both event and a repeating specification are provided, the list of events should be understood as an interpretation of the information in the repeat structure.
    min:
      v: 0
    max:
      v: *
    base:
      path:
        v: Timing
      min:
        v: 0
      max:
        v: *
    constraint:
      key:
        v: ele-1
      severity:
        v: error
      human:
        v: All FHIR elements must have a @value or children
      expression:
        v: hasValue() or (children().count() > id.count())
      source:
        v: http://hl7.org/fhir/StructureDefinition/Element
        l: Element
    is modifier:
      v: false
    mapping:
      identity:
        v: rim
      map:
        v: n/a,QSET<TS> (GTS)
    mapping:
      identity:
        v: v2
      map:
        v: N/A
  element:
    id:
      v: Timing.id
    path:
      v: Timing.id
    representation:
      v: xmlAttr
    short:
      v: Unique id for inter-element referencing
    definition:
      v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
    min:
      v: 0
    max:
      v: 1
    base:
      path:
        v: Element.id
      min:
        v: 0
      max:
        v: 1
    type:
      extension:
        value: Url
      code:
        v: http://hl7.org/fhirpath/System.String
        l: System.String
    condition:
      v: ele-1
    is modifier:
      v: false
    is summary:
      v: false
    mapping:
      identity:
        v: rim
      map:
        v: n/a
  element:
    id:
      v: Timing.extension
    path:
      v: Timing.extension
    slicing:
      description:
        v: Extensions are always sliced by (at least) url
      rules:
        v: open
    short:
      v: Additional content defined by implementations
    definition:
      v: May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
    comment:
      v: There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
    alias:
      v: extensions
    alias:
      v: user content
    min:
      v: 0
    max:
      v: *
    base:
      path:
        v: Element.extension

Url
v: string
l: string

v: value

v: url

v: 0

v: *

code:
  v: Extension
  l: Extension

key:
  v: ele-1
severity:
  v: error
human:
  v: All FHIR elements must have a @value or children
expression:
  v: hasValue() or (children().count() > id.count())
source:
  v: http://hl7.org/fhir/StructureDefinition/Element
  l: Element

v: false

v: false

identity:
  v: rim
map:
  v: n/a

id:
  v: Timing.modifierExtension
path:
  v: Timing.modifierExtension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  rules:
    v: open
short:
  v: Extensions that cannot be ignored even if unrecognized
definition:
  v: May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
comment:
  v: There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
requirements:
  v: Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](extensibility.html#modifierExtension).
alias:
  v: extensions
alias:
  v: user content
alias:
  v: modifiers
min:
  v: 0
max:
  v: *
base:
  path:
    v: BackboneType.modifierExtension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: true
is modifier reason:
  v: Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Timing.event
path:
  v: Timing.event
short:
  v: When the event occurs
definition:
  v: Identifies specific times when the event occurs.
requirements:
  v: In a Medication Administration Record, for instance, you need to take a general specification, and turn it into a precise specification.
min:
  v: 0
max:
  v: *
base:
  path:
    v: Timing.event
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: dateTime
    l: dateTime
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: QLIST<TS>

id:
  v: Timing.repeat
path:
  v: Timing.repeat
short:
  v: When the event is to occur
definition:
  v: A set of rules that describe when the event is scheduled.
requirements:
  v: Many timing schedules are determined by regular repetitions.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: Element
    l: Element
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children or both
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
constraint:
  key:
    v: tim-1
  severity:
    v: error
  human:
    v: if there's a duration, there needs to be duration units
  expression:
    v: duration.empty() or durationUnit.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-2
  severity:
    v: error
  human:
    v: if there's a period, there needs to be period units
  expression:
    v: period.empty() or periodUnit.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-4
  severity:
    v: error
  human:
    v: duration SHALL be a non-negative value
  expression:
    v: duration.exists() implies duration >= 0
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-5
  severity:
    v: error
  human:
    v: period SHALL be a non-negative value
  expression:
    v: period.exists() implies period >= 0
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-6
  severity:
    v: error
  human:
    v: If there's a periodMax, there must be a period
  expression:
    v: periodMax.empty() or period.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-7
  severity:
    v: error
  human:
    v: If there's a durationMax, there must be a duration
  expression:
    v: durationMax.empty() or duration.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-8
  severity:
    v: error
  human:
    v: If there's a countMax, there must be a count
  expression:
    v: countMax.empty() or count.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-9
  severity:
    v: error
  human:
    v: If there's an offset, there must be a when (and not C, CM, CD, CV)
  expression:
    v: offset.empty() or (when.exists() and when.select($this in ('C' | 'CM' | 'CD' | 'CV')).allFalse())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-10
  severity:
    v: error
  human:
    v: If there's a timeOfDay, there cannot be a when, or vice versa
  expression:
    v: timeOfDay.empty() or when.empty()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-11
  severity:
    v: error
  human:
    v: Only use startOffset when frequency is present and > 1
  expression:
    v: startOffset.exists() implies (frequency > 1)
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
constraint:
  key:
    v: tim-12
  severity:
    v: error
  human:
    v: Only use endOffset when frequency is present and > 1
  expression:
    v: endOffset.exists() implies (frequency > 1)
  source:
    v: http://hl7.org/fhir/StructureDefinition/Timing
    l: Timing
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: Implies PIVL or EIVL

id:
  v: Timing.repeat.id
path:
  v: Timing.repeat.id
representation:
  v: xmlAttr
short:
  v: Unique id for inter-element referencing
definition:
  v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Element.id
  min:
    v: 0
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: string
      l: string
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
condition:
  v: ele-1
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.extension
path:
  v: Timing.repeat.extension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  rules:
    v: open
short:
  v: Additional content defined by implementations
definition:
  v: May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
comment:
  v: There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
alias:
  v: extensions
alias:
  v: user content
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.bounds[x]
path:
  v: Timing.repeat.bounds[x]
short:
  v: Length/Range of lengths, or (Start and/or end) limits
definition:
  v: Either a duration for the length of the timing schedule, a range of possible length, or outer bounds for start and/or end limits of the timing schedule.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.bounds[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: Duration
    l: Duration
type:
  code:
    v: Range
    l: Range
type:
  code:
    v: Period
    l: Period
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: IVL(TS) used in a QSI

id:
  v: Timing.repeat.count
path:
  v: Timing.repeat.count
short:
  v: Number of times to repeat
definition:
  v: A total count of the desired number of repetitions across the duration of the entire timing specification. If countMax is present, this element indicates the lower bound of the allowed range of count values.
comment:
  v: If you have both bounds and count, then this should be understood as within the bounds period, until count times happens.
requirements:
  v: Repetitions may be limited by end time or total occurrences.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.count
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
condition:
  v: tim-8
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.count

id:
  v: Timing.repeat.countMax
path:
  v: Timing.repeat.countMax
short:
  v: Maximum number of times to repeat
definition:
  v: If present, indicates that the count is a range - so to perform the action between [count] and [countMax] times.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.countMax
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
condition:
  v: tim-8
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.count

id:
  v: Timing.repeat.duration
path:
  v: Timing.repeat.duration
short:
  v: How long when it happens
definition:
  v: How long this thing happens for when it happens. If durationMax is present, this element indicates the lower bound of the allowed range of the duration.
comment:
  v: For some events the duration is part of the definition of the event (e.g. IV infusions, where the duration is implicit in the specified quantity and rate). For others, it's part of the timing specification (e.g. exercise).
requirements:
  v: Some activities are not instantaneous and need to be maintained for a period of time.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.duration
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-7
condition:
  v: tim-1
condition:
  v: tim-4
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.durationMax
path:
  v: Timing.repeat.durationMax
short:
  v: How long when it happens (Max)
definition:
  v: If present, indicates that the duration is a range - so to perform the action between [duration] and [durationMax] time length.
comment:
  v: For some events the duration is part of the definition of the event (e.g. IV infusions, where the duration is implicit in the specified quantity and rate). For others, it's part of the timing specification (e.g. exercise).
requirements:
  v: Some activities are not instantaneous and need to be maintained for a period of time.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.durationMax
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-7
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.durationUnit
path:
  v: Timing.repeat.durationUnit
short:
  v: s | min | h | d | wk | mo | a - unit of time (UCUM)
definition:
  v: The units of time for the duration, in UCUM units Normal practice is to use the 'mo' code as a calendar month when calculating the next occurrence.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.durationUnit
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: code
    l: code
condition:
  v: tim-1
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: A unit of time (units from UCUM).
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: UnitsOfTime
  strength:
    v: required
  description:
    v: A unit of time (units from UCUM).
  value set:
    v: http://hl7.org/fhir/ValueSet/units-of-time|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/units-of-time
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase.unit

id:
  v: Timing.repeat.frequency
path:
  v: Timing.repeat.frequency
short:
  v: Indicates the number of repetitions that should occur within a period. I.e. Event occurs frequency times per period
definition:
  v: The number of times to repeat the action within the specified period. If frequencyMax is present, this element indicates the lower bound of the allowed range of the frequency.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.frequency
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
meaning when missing:
  v: If no frequency is stated, the assumption is that the event occurs once per period, but systems SHOULD always be specific about this
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.frequencyMax
path:
  v: Timing.repeat.frequencyMax
short:
  v: Event occurs up to frequencyMax times per period
definition:
  v: If present, indicates that the frequency is a range - so to repeat between [frequency] and [frequencyMax] times within the period or period range.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.frequencyMax
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.period
path:
  v: Timing.repeat.period
short:
  v: The duration to which the frequency applies. I.e. Event occurs frequency times per period
definition:
  v: Indicates the duration of time over which repetitions are to occur; e.g. to express "3 times per day", 3 would be the frequency and "1 day" would be the period. If periodMax is present, this element indicates the lower bound of the allowed range of the period length.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.period
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-6
condition:
  v: tim-5
condition:
  v: tim-2
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.periodMax
path:
  v: Timing.repeat.periodMax
short:
  v: Upper limit of period (3-4 hours)
definition:
  v: If present, indicates that the period is a range from [period] to [periodMax], allowing expressing concepts such as "do this once every 3-5 days.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.periodMax
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-6
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.periodUnit
path:
  v: Timing.repeat.periodUnit
short:
  v: s | min | h | d | wk | mo | a - unit of time (UCUM)
definition:
  v: The units of time for the period in UCUM units Normal practice is to use the 'mo' code as a calendar month when calculating the next occurrence.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.periodUnit
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: code
    l: code
condition:
  v: tim-2
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: A unit of time (units from UCUM).
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: UnitsOfTime
  strength:
    v: required
  description:
    v: A unit of time (units from UCUM).
  value set:
    v: http://hl7.org/fhir/ValueSet/units-of-time|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/units-of-time
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase.unit

id:
  v: Timing.repeat.startOffset
path:
  v: Timing.repeat.startOffset
short:
  v: Events within the repeat period do not start until startOffset has elapsed
definition:
  v: Indicates that the events within the period of the repeat do not start until startOffset has elapsed.
comment:
  v: This element is defined to support interlaced schedules, e.g. for different actions that happen on different days, but that have repeat cycles that are tied together by the context. This is a usually encountered in Dosages.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.startOffset
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: Quantity
    l: Quantity
  profile:
    v: http://hl7.org/fhir/StructureDefinition/SimpleQuantity
    l: SimpleQuantity
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.endOffset
path:
  v: Timing.repeat.endOffset
short:
  v: Events within the repeat period step once endOffset before the end of the period
definition:
  v: Indicates that the events within the period of the repeat step endOffset before the period ends.
comment:
  v: This element is defined for medication schedules that cycle like 'do something for X days, and then stop for Y days'. This can only apply where the window for repeats has a defined or known end time.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.endOffset
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: Quantity
    l: Quantity
  profile:
    v: http://hl7.org/fhir/StructureDefinition/SimpleQuantity
    l: SimpleQuantity
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.dayOfWeek
path:
  v: Timing.repeat.dayOfWeek
short:
  v: mon | tue | wed | thu | fri | sat | sun
definition:
  v: If one or more days of week is provided, then the action happens only on the specified day(s).
comment:
  v: If no days are specified, the action is assumed to happen every day as otherwise specified.
min:
  v: 0
max:
  v: *
base:
  path:
    v: Timing.repeat.dayOfWeek
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: code
    l: code
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: DayOfWeek
  strength:
    v: required
  value set:
    v: http://hl7.org/fhir/ValueSet/days-of-week|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/days-of-week
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.timeOfDay
path:
  v: Timing.repeat.timeOfDay
short:
  v: Time of day for action
definition:
  v: Specified time of day for action to take place.
comment:
  v: When time of day is specified, it is inferred that the action happens every day (as filtered by dayofWeek) on the specified times. If there's a timeOfDay, there cannot be a when, or vice versa.
min:
  v: 0
max:
  v: *
base:
  path:
    v: Timing.repeat.timeOfDay
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: time
    l: time
condition:
  v: tim-10
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.when
path:
  v: Timing.repeat.when
short:
  v: Code for time period of occurrence
definition:
  v: An approximate time period during the day, potentially linked to an event of daily living that indicates when the action should occur.
comment:
  v: When more than one event is listed, the event is tied to the union of the specified events.
requirements:
  v: Timings are frequently determined by occurrences such as waking, eating and sleep.
min:
  v: 0
max:
  v: *
base:
  path:
    v: Timing.repeat.when
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: code
    l: code
condition:
  v: tim-9
condition:
  v: tim-10
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: Real-world event relating to the schedule.
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: EventTiming
  strength:
    v: required
  description:
    v: Real-world event relating to the schedule.
  value set:
    v: http://hl7.org/fhir/ValueSet/event-timing|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/event-timing
mapping:
  identity:
    v: rim
  map:
    v: EIVL.event

id:
  v: Timing.repeat.offset
path:
  v: Timing.repeat.offset
short:
  v: Minutes from event (before or after)
definition:
  v: The number of minutes from the event. If the event code does not indicate whether the minutes is before or after the event, then the offset is assumed to be after the event.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.repeat.offset
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: unsignedInt
    l: unsignedInt
condition:
  v: tim-9
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: EIVL.offset

id:
  v: Timing.code
path:
  v: Timing.code
short:
  v: C | BID | TID | QID | AM | PM | QD | QOD | +
definition:
  v: A code for the timing schedule (or just text in code.text). Some codes such as BID are ubiquitous, but many institutions define their own additional codes. If a code is provided, the code is understood to be a complete statement of whatever is specified in the structured timing data, and either the code or the data may be used to interpret the Timing, with the exception that .repeat.bounds still applies over the code (and is not contained in the code).
comment:
  v: BID etc. are defined as 'at institutionally specified times'. For example, an institution may choose that BID is "always at 7am and 6pm". If it is inappropriate for this choice to be made, the code BID should not be used. Instead, a distinct organization-specific code should be used in place of the HL7-defined BID code and/or a structured representation should be used (in this case, specifying the two event times).
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Timing.code
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: CodeableConcept
    l: CodeableConcept
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element
    l: Element
is modifier:
  v: false
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: Code for a known / defined timing pattern.
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: TimingAbbreviation
  strength:
    v: preferred
  description:
    v: Code for a known / defined timing pattern.
  value set:
    v: http://hl7.org/fhir/ValueSet/timing-abbreviation
    l: timing-abbreviation
mapping:
  identity:
    v: rim
  map:
    v: QSC.code

element:
  id:
    v: Timing
  path:
    v: Timing
  short:
    v: A timing schedule that specifies an event that may occur multiple times
  definition:
    v: Specifies an event that may occur multiple times. Timing schedules are used to record when things are planned, expected or requested to occur. The most common usage is in dosage instructions for medications. They are also used when planning care of various kinds, and may be used for reporting the schedule to which past regular activities were carried out.
  comment:
    v: Describes the occurrence of an event that may occur multiple times. Timing schedules are used for specifying when events are expected or requested to occur, and may also be used to represent the summary of a past or ongoing event. For simplicity, the definitions of Timing components are expressed as 'future' events, but such components can also be used to describe historic or ongoing events. A Timing schedule can be a list of events and/or criteria for when the event happens, which can be expressed in a structured form and/or as a code. When both event and a repeating specification are provided, the list of events should be understood as an interpretation of the information in the repeat structure.
  min:
    v: 0
  max:
    v: *
  mapping:
    identity:
      v: v2
    map:
      v: N/A
  mapping:
    identity:
      v: rim
    map:
      v: QSET<TS> (GTS)
element:
  id:
    v: Timing.event
  path:
    v: Timing.event
  short:
    v: When the event occurs
  definition:
    v: Identifies specific times when the event occurs.
  requirements:
    v: In a Medication Administration Record, for instance, you need to take a general specification, and turn it into a precise specification.
  min:
    v: 0
  max:
    v: *
  type:
    code:
      v: dateTime
      l: dateTime
  is summary:
    v: true
  mapping:
    identity:
      v: rim
    map:
      v: QLIST<TS>
element:
  id:
    v: Timing.repeat
  path:
    v: Timing.repeat
  short:
    v: When the event is to occur
  definition:
    v: A set of rules that describe when the event is scheduled.
  requirements:
    v: Many timing schedules are determined by regular repetitions.
  min:
    v: 0
  max:
    v: 1
  type:
    code:
      v: Element
      l: Element
  constraint:
    key:
      v: tim-9
    severity:
      v: error
    human:
      v: If there's an offset, there must be a when (and not C, CM, CD, CV)
    expression:
      v: offset.empty() or (when.exists() and when.select($this in ('C' | 'CM' | 'CD' | 'CV')).allFalse())
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-5
    severity:
      v: error
    human:
      v: period SHALL be a non-negative value
    expression:
      v: period.exists() implies period >= 0
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-6
    severity:
      v: error
    human:
      v: If there's a periodMax, there must be a period
    expression:
      v: periodMax.empty() or period.exists()
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-7
    severity:
      v: error
    human:
      v: If there's a durationMax, there must be a duration
    expression:
      v: durationMax.empty() or duration.exists()
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-8
    severity:
      v: error
    human:
      v: If there's a countMax, there must be a count
    expression:
      v: countMax.empty() or count.exists()
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-1
    severity:
      v: error
    human:
      v: if there's a duration, there needs to be duration units
    expression:
      v: duration.empty() or durationUnit.exists()
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-10
    severity:
      v: error
    human:
      v: If there's a timeOfDay, there cannot be a when, or vice versa
    expression:
      v: timeOfDay.empty() or when.empty()
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-11
    severity:
      v: error
    human:
      v: Only use startOffset when frequency is present and > 1
    expression:
      v: startOffset.exists() implies (frequency > 1)
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-2
    severity:
      v: error
    human:
      v: if there's a period, there needs to be period units
    expression:
      v: period.empty() or periodUnit.exists()
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-12
    severity:
      v: error
    human:
      v: Only use endOffset when frequency is present and > 1
    expression:
      v: endOffset.exists() implies (frequency > 1)
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing
  constraint:
    key:
      v: tim-4
    severity:
      v: error
    human:
      v: duration SHALL be a non-negative value
    expression:
      v: duration.exists() implies duration >= 0
    source:
      v: http://hl7.org/fhir/StructureDefinition/Timing
      l: Timing

v: true

identity:
  v: rim
map:
  v: Implies PIVL or EIVL

id:
  v: Timing.repeat.bounds[x]
path:
  v: Timing.repeat.bounds[x]
short:
  v: Length/Range of lengths, or (Start and/or end) limits
definition:
  v: Either a duration for the length of the timing schedule, a range of possible length, or outer bounds for start and/or end limits of the timing schedule.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: Duration
    l: Duration
type:
  code:
    v: Range
    l: Range
type:
  code:
    v: Period
    l: Period
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: IVL(TS) used in a QSI

id:
  v: Timing.repeat.count
path:
  v: Timing.repeat.count
short:
  v: Number of times to repeat
definition:
  v: A total count of the desired number of repetitions across the duration of the entire timing specification. If countMax is present, this element indicates the lower bound of the allowed range of count values.
comment:
  v: If you have both bounds and count, then this should be understood as within the bounds period, until count times happens.
requirements:
  v: Repetitions may be limited by end time or total occurrences.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
condition:
  v: tim-8
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.count

id:
  v: Timing.repeat.countMax
path:
  v: Timing.repeat.countMax
short:
  v: Maximum number of times to repeat
definition:
  v: If present, indicates that the count is a range - so to perform the action between [count] and [countMax] times.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
condition:
  v: tim-8
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.count

id:
  v: Timing.repeat.duration
path:
  v: Timing.repeat.duration
short:
  v: How long when it happens
definition:
  v: How long this thing happens for when it happens. If durationMax is present, this element indicates the lower bound of the allowed range of the duration.
comment:
  v: For some events the duration is part of the definition of the event (e.g. IV infusions, where the duration is implicit in the specified quantity and rate). For others, it's part of the timing specification (e.g. exercise).
requirements:
  v: Some activities are not instantaneous and need to be maintained for a period of time.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-7
condition:
  v: tim-1
condition:
  v: tim-4
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.durationMax
path:
  v: Timing.repeat.durationMax
short:
  v: How long when it happens (Max)
definition:
  v: If present, indicates that the duration is a range - so to perform the action between [duration] and [durationMax] time length.
comment:
  v: For some events the duration is part of the definition of the event (e.g. IV infusions, where the duration is implicit in the specified quantity and rate). For others, it's part of the timing specification (e.g. exercise).
requirements:
  v: Some activities are not instantaneous and need to be maintained for a period of time.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-7
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.durationUnit
path:
  v: Timing.repeat.durationUnit
short:
  v: s | min | h | d | wk | mo | a - unit of time (UCUM)
definition:
  v: The units of time for the duration, in UCUM units Normal practice is to use the 'mo' code as a calendar month when calculating the next occurrence.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: code
    l: code
condition:
  v: tim-1
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: A unit of time (units from UCUM).
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: UnitsOfTime
  strength:
    v: required
  description:
    v: A unit of time (units from UCUM).
  value set:
    v: http://hl7.org/fhir/ValueSet/units-of-time|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/units-of-time
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase.unit

id:
  v: Timing.repeat.frequency
path:
  v: Timing.repeat.frequency
short:
  v: Indicates the number of repetitions that should occur within a period. I.e. Event occurs frequency times per period
definition:
  v: The number of times to repeat the action within the specified period. If frequencyMax is present, this element indicates the lower bound of the allowed range of the frequency.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
meaning when missing:
  v: If no frequency is stated, the assumption is that the event occurs once per period, but systems SHOULD always be specific about this
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.frequencyMax
path:
  v: Timing.repeat.frequencyMax
short:
  v: Event occurs up to frequencyMax times per period
definition:
  v: If present, indicates that the frequency is a range - so to repeat between [frequency] and [frequencyMax] times within the period or period range.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: positiveInt
    l: positiveInt
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.period
path:
  v: Timing.repeat.period
short:
  v: The duration to which the frequency applies. I.e. Event occurs frequency times per period
definition:
  v: Indicates the duration of time over which repetitions are to occur; e.g. to express "3 times per day", 3 would be the frequency and "1 day" would be the period. If periodMax is present, this element indicates the lower bound of the allowed range of the period length.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-6
condition:
  v: tim-5
condition:
  v: tim-2
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.periodMax
path:
  v: Timing.repeat.periodMax
short:
  v: Upper limit of period (3-4 hours)
definition:
  v: If present, indicates that the period is a range from [period] to [periodMax], allowing expressing concepts such as "do this once every 3-5 days.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: decimal
    l: decimal
condition:
  v: tim-6
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase

id:
  v: Timing.repeat.periodUnit
path:
  v: Timing.repeat.periodUnit
short:
  v: s | min | h | d | wk | mo | a - unit of time (UCUM)
definition:
  v: The units of time for the period in UCUM units Normal practice is to use the 'mo' code as a calendar month when calculating the next occurrence.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: code
    l: code
condition:
  v: tim-2
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: A unit of time (units from UCUM).
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: UnitsOfTime
  strength:
    v: required
  description:
    v: A unit of time (units from UCUM).
  value set:
    v: http://hl7.org/fhir/ValueSet/units-of-time|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/units-of-time
mapping:
  identity:
    v: rim
  map:
    v: PIVL.phase.unit

id:
  v: Timing.repeat.startOffset
path:
  v: Timing.repeat.startOffset
short:
  v: Events within the repeat period do not start until startOffset has elapsed
definition:
  v: Indicates that the events within the period of the repeat do not start until startOffset has elapsed.
comment:
  v: This element is defined to support interlaced schedules, e.g. for different actions that happen on different days, but that have repeat cycles that are tied together by the context. This is a usually encountered in Dosages.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: Quantity
    l: Quantity
  profile:
    v: http://hl7.org/fhir/StructureDefinition/SimpleQuantity
    l: SimpleQuantity
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.endOffset
path:
  v: Timing.repeat.endOffset
short:
  v: Events within the repeat period step once endOffset before the end of the period
definition:
  v: Indicates that the events within the period of the repeat step endOffset before the period ends.
comment:
  v: This element is defined for medication schedules that cycle like 'do something for X days, and then stop for Y days'. This can only apply where the window for repeats has a defined or known end time.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: Quantity
    l: Quantity
  profile:
    v: http://hl7.org/fhir/StructureDefinition/SimpleQuantity
    l: SimpleQuantity
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.dayOfWeek
path:
  v: Timing.repeat.dayOfWeek
short:
  v: mon | tue | wed | thu | fri | sat | sun
definition:
  v: If one or more days of week is provided, then the action happens only on the specified day(s).
comment:
  v: If no days are specified, the action is assumed to happen every day as otherwise specified.
min:
  v: 0
max:
  v: *
type:
  code:
    v: code
    l: code
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: DayOfWeek
  strength:
    v: required
  value set:
    v: http://hl7.org/fhir/ValueSet/days-of-week|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/days-of-week
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.timeOfDay
path:
  v: Timing.repeat.timeOfDay
short:
  v: Time of day for action
definition:
  v: Specified time of day for action to take place.
comment:
  v: When time of day is specified, it is inferred that the action happens every day (as filtered by dayofWeek) on the specified times. If there's a timeOfDay, there cannot be a when, or vice versa.
min:
  v: 0
max:
  v: *
type:
  code:
    v: time
    l: time
condition:
  v: tim-10
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Timing.repeat.when
path:
  v: Timing.repeat.when
short:
  v: Code for time period of occurrence
definition:
  v: An approximate time period during the day, potentially linked to an event of daily living that indicates when the action should occur.
comment:
  v: When more than one event is listed, the event is tied to the union of the specified events.
requirements:
  v: Timings are frequently determined by occurrences such as waking, eating and sleep.
min:
  v: 0
max:
  v: *
type:
  code:
    v: code
    l: code
condition:
  v: tim-9
condition:
  v: tim-10
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: Real-world event relating to the schedule.
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: EventTiming
  strength:
    v: required
  description:
    v: Real-world event relating to the schedule.
  value set:
    v: http://hl7.org/fhir/ValueSet/event-timing|6.0.0-ballot4
    l: http://hl7.org/fhir/ValueSet/event-timing
mapping:
  identity:
    v: rim
  map:
    v: EIVL.event

id:
  v: Timing.repeat.offset
path:
  v: Timing.repeat.offset
short:
  v: Minutes from event (before or after)
definition:
  v: The number of minutes from the event. If the event code does not indicate whether the minutes is before or after the event, then the offset is assumed to be after the event.
min:
  v: 0
max:
  v: 1
type:
  code:
    v: unsignedInt
    l: unsignedInt
condition:
  v: tim-9
is summary:
  v: true
mapping:
  identity:
    v: rim
  map:
    v: EIVL.offset

id:
  v: Timing.code
path:
  v: Timing.code
short:
  v: C | BID | TID | QID | AM | PM | QD | QOD | +
definition:
  v: A code for the timing schedule (or just text in code.text). Some codes such as BID are ubiquitous, but many institutions define their own additional codes. If a code is provided, the code is understood to be a complete statement of whatever is specified in the structured timing data, and either the code or the data may be used to interpret the Timing, with the exception that .repeat.bounds still applies over the code (and is not contained in the code).
comment:
  v: BID etc. are defined as 'at institutionally specified times'. For example, an institution may choose that BID is "always at 7am and 6pm". If it is inappropriate for this choice to be made, the code BID should not be used. Instead, a distinct organization-specific code should be used in place of the HL7-defined BID code and/or a structured representation should be used (in this case, specifying the two event times).
min:
  v: 0
max:
  v: 1
type:
  code:
    v: CodeableConcept
    l: CodeableConcept
is summary:
  v: true
binding:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/binding-definition
      l: binding-definition
    value: Markdown
      v: Code for a known / defined timing pattern.
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName
      l: elementdefinition-bindingName
    value: String
      v: TimingAbbreviation
  strength:
    v: preferred
  description:
    v: Code for a known / defined timing pattern.
  value set:
    v: http://hl7.org/fhir/ValueSet/timing-abbreviation
    l: timing-abbreviation
mapping:
  identity:
    v: rim
  map:
    v: QSC.code